Key Technologies
Docs
Circuit Breaker Pattern
How the circuit breaker pattern prevents cascading failures in microservices, a working code example, and staff-engineer interview questions with expected answers.
Database Selection — Postgres vs DynamoDB vs MongoDB vs Cassandra
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Proximity Search — Geohashing vs Spatial Trees
Proximity Search — spatial trees vs encoded keys
Vector Databases
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ZooKeeper
When and why to use ZooKeeper for coordination, leader election, membership, locks, shard ownership, failover, and configuration.